<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
  import * as echarts from 'echarts';
  require('echarts/theme/macarons') // echarts theme
  import resize from './mixins/resize'

  export default {
    mixins: [resize],
    props: {
      interval: {
        type: Number,
        default: 0,
      },
      className: {
        type: String,
        default: 'chart'
      },
      width: {
        type: String,
        default: ''
      },
      height: {
        type: String,
        default: '350px'
      },
      autoResize: {
        type: Boolean,
        default: true
      },
      chartData: {
        type: Object,
        required: true
      },
      datetimes: {
        type: Array,
        required: true
      },
      powerMax: {
        type: Object,
        required: true
      },
      powerUnit: {
        type: Array,
        required: true
      },
      powerColor: {
        type: String
      },
      powerType: {
        type: String
      }
    },
    data() {
      return {
        chart: null
      }
    },
    watch: {
      chartData: {
        deep: true,
        handler(val) {
          this.setOptions(val)
        }
      }
    },
    mounted() {
      this.$nextTick(() => {
        this.initChart()
      })
    },
    beforeDestroy() {
      if (!this.chart) {
        return
      }
      this.chart.dispose()
      this.chart = null
    },
    methods: {
      initChart() {
        this.chart = echarts.init(this.$el, 'macarons')
        this.setOptions(this.chartData)
      },
      setOptions({ expectedData, dataV } = {}) {
        this.chart.setOption({
          xAxis: {
            data: this.datetimes,
            boundaryGap: false,
            axisTick: {
              show: false
            },
            nameTextStyle: {fontStyle: 'oblique'},
            axisLabel: {
              showMaxLabel: true,
              interval: this.interval,
              rotate: 40//角度顺时针计算的
            }
          },
          grid: {
            left: 10,
            right: '2%',
            bottom: 20,
            top: 30,
            containLabel: true
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross'
            },
            padding: [5, 10],
            /*formatter: '{b0}<br />' + this.powerType + '：{c0}<br />{c1}<br />{c2}',*/
          },
          yAxis: [
            {
              type: 'value',
              name: '总注册数',
              axisTick: {
                show: false
              },
              //max: this.powerMax.maxW,
              axisLine: {
                show: true ,
                lineStyle: {
                }
              },
              axisLabel: {
                formatter: '{value}'
              },
            },
            {
              type: 'value',
              offset: 1,
              name: '新注册数',
              position: 'right',
              alignTicks: {
                show: false
              },
              axisLine: {
                show: true,
                lineStyle: {
                }
              },
              //max: this.powerMax.maxV,
              axisLabel: {
                formatter: '{value}'
              }
            }
          ],
          legend: {
            data: ['总注册数', '新注册数' ],
            show: true
          },
          series: [
            {
              name: '总注册数', itemStyle: {
                normal: {
                  color: this.powerColor,
                  lineStyle: {
                    color: this.powerColor,
                    width: 2
                  }
                }
              },
              colorBy: 'series',
              smooth: true,
              type: 'line',
              symbol: 'circle',
              symbolSize: 5,
              label: {
                show: false,
                position: 'left'
              },
              data: expectedData,
              animationDuration: 2800,
              animationEasing: 'cubicInOut'
            },
            {
              name: '新注册数',
              type: 'bar',
              barWidth: 10,
              symbol: 'circle',
              symbolSize: 5,
              yAxisIndex: 1,
              data: dataV,
              animationDuration: 2800,
              animationEasing: 'cubicInOut'
            },
          ]
        })

      }
    }
  }
</script>
